Abstract
Chiral nematic(N*) liquid crystal can reflect incident light selectively,and the reflective bandwidth is less than 150 nm commonly.Five N* liquid crystals were prepared from a nematic liquid crystal with negative dielectric anisotropy SLC10V513-200 and chiral compounds R1011,CB15.Their reflective spectra could cover with the entire visible spectrum.Polyurea microcapsules containing above N* liquid crystals were prepared by interfacial polymerization of isophorone diisocyanate(IPDI).By mixing same weight of five kinds of microcapsules together in surfactant OP-10 and IPDI,a gel was obtained.Applying an alternating electric field to an 80.0 μm gel film,the liquid crystal molecules in microcapsules would align parallel with the substrates.Curing monomer in the microcapsules with UV light and planar texture can be fixed,so the gel film which could reflect entire visible light wavelength range was prepared.
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